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Organophosphorus flame-retarded copolymeric nylon composition and preparation method thereof

A technology for copolymerizing nylon and organophosphorus, applied in the field of organophosphorus flame-retardant copolymerized nylon composition and its preparation, flame-retardant copolymerized nylon composition and its preparation

Inactive Publication Date: 2017-03-15
CHENGDU TALY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relative viscosity of the prepared polyamide material is only 0.78-0.82, and there is still a lot of room for improvement in the mechanical properties and other properties of the material samples

Method used

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  • Organophosphorus flame-retarded copolymeric nylon composition and preparation method thereof
  • Organophosphorus flame-retarded copolymeric nylon composition and preparation method thereof
  • Organophosphorus flame-retarded copolymeric nylon composition and preparation method thereof

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preparation example Construction

[0065] The preparation method of flame-retardant nylon composition of the present invention comprises:

[0066] (A) reacting organophosphorus flame retardant monomers or their derivatives with diamine monomers to make excess amino groups and prepare salt solutions;

[0067](B) allowing the reaction product of step (A) to react with a lactam in the presence of an inorganic nanomaterial to generate a flame retardant nylon composition; or

[0068] (B') Generate organophosphorus flame-retardant copolymer nylon without the presence of inorganic nanomaterials, and then blend organophosphorus flame-retardant copolymer nylon and inorganic nanomaterials.

[0069] In step (A), preferably, the flame retardant reacts with the diamine monomer in a molar ratio of 1:0.1-20, preferably 1:0.5-10, more preferably 1:1-2.

[0070] In step (A), preferably, the diamine monomer is slightly excessive, so that the pH of the prepared salt solution is 7-9. The reaction temperature rose from room tempe...

Embodiment 1

[0089] Stir and react the flame retardant monomer and hexamethylenediamine in a small amount of water at a molar ratio of 1:1.3 at 50°C for 0.5h, adjust the pH of the solution to 7.5, and dry to form a salt. Caprolactam monomer, salt obtained above (accounting for 6% of the total mass of caprolactam monomer, the same below), nano-montmorillonite accounting for 4wt% of caprolactam monomer, catalyst sodium hypophosphite each accounting for 1wt‰, antioxidant Agent p-phenylenediamine, molecular weight regulator benzoic acid, and 3% water were added to the reactor, vacuumized, nitrogen filled three times, and finally the internal pressure of the reactor was kept at 0.25MPa. Heat the reactor and keep stirring at a high speed. When the temperature of the reactor reaches 215° C. and the pressure is 1.75 MPa, keep the temperature and pressure constant for 2 hours. Then the temperature was raised to 260°C, and the pressure was released to normal pressure within 1.5 hours. Vacuumize to ...

Embodiment 2

[0092] Stir and react the flame retardant monomer and hexamethylenediamine in a small amount of water at a molar ratio of 1:1.1 at 55°C for 40 minutes, adjust the pH of the solution to 7.3, and dry to form a salt. The decanolactam monomer, the salt obtained above (accounting for 7% of the total mass of the decanolactam monomer), the nano talc accounting for 4wt%, the catalyst toluenesulfonic acid each accounting for 1‰, and the antioxidant 2 , 6-di-tert-butyl-4-methylphenol and molecular weight regulator adipic acid were added to the reactor, vacuumed and filled with nitrogen three times, and finally the pressure inside the reactor was kept at 0.2 MPa. Heat the reactor and keep stirring at a high speed. When the temperature of the reactor reaches 220° C. and the pressure is 1.9 MPa, keep the temperature and pressure constant for 2 hours. Then the temperature was raised to 270°C, and the pressure was released to normal pressure within 2 hours. Vacuumize to -0.08MPa. After the ...

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Abstract

The invention discloses an organophosphorus flame-retarded copolymeric nylon composition and a preparation method thereof. The organophosphorus flame-retarded copolymeric nylon composition is prepared from organophosphorus copolymeric flame-retarded polyamide shown as the formula (I) (please see the formula in the description) and 0.1 wt%-10 wt% of an inorganic nanomaterial relative to organophosphorus copolymeric flame-retarded polyamide. According to the organophosphorus flame-retarded nylon composition prepared through the method, a little amount of a reaction flame retardant is needed, the viscosity is controllable in the preparation process, the molten drop resistance effect is excellent, and the flame retardance is outstanding.

Description

technical field [0001] The invention relates to an organophosphorus-based flame-retardant copolymerized nylon composition and a preparation method thereof, belonging to the field of polymer flame-retardant materials, in particular to a flame-retardant material used in textiles, packaging materials, automobile parts, motor parts, engineering plastics, etc. Copolymerized nylon composition and method for its preparation. Background technique [0002] Nylon is widely used in construction, chemical industry, transportation and military fields due to its excellent properties such as high strength, heat resistance, wear resistance and solvent resistance. However, hydrogen bonds can be formed between its amide bonds and water molecules, which has greater water absorption, resulting in poor dimensional stability and reduced electrical properties. At the same time, it also has the disadvantages of low impact strength in dry state or low temperature, opacity, and poor solubility. , li...

Claims

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Application Information

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IPC IPC(8): C08G69/42C08K3/34C08K3/36C08K3/22
CPCC08G69/42C08K3/22C08K3/346C08K3/36C08K2003/2241C08K2003/2296C08K2201/011C08K3/34C08L77/06
Inventor 马永梅陶云峰吕文涛方辉张京楠陈群跃张程夕易丹青郑鲲
Owner CHENGDU TALY TECH CO LTD
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